/* ===========================================================
   广州圣典文化传媒有限公司 · www.sd368.com
   main.css — 深色电影感设计系统 / 移动优先响应式
   =========================================================== */

:root{
  --bg:#08090b;
  --bg-2:#0e1013;
  --bg-3:#14171c;
  --bg-4:#1b1f25;
  --line:rgba(255,255,255,.09);
  --line-2:rgba(255,255,255,.16);
  --txt:#f4f5f7;
  --txt-2:#a7adb6;
  --txt-3:#6d737c;
  --gold:#c8a56b;
  --gold-2:#e6c992;
  --gold-dim:rgba(200,165,107,.14);
  --max:1280px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --nav-h:76px;
}

[hidden]{display:none!important}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--txt);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.nav-open{overflow:hidden}
img,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.25;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}

/* 胶片颗粒质感（极轻，覆盖全站） */
body::after{
  content:"";position:fixed;inset:0;z-index:9999;pointer-events:none;opacity:.035;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
}

.wrap{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* ---------- 通用文字 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--gold);
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--gold);opacity:.7}
.sec-title{font-size:clamp(26px,4.2vw,44px);margin-top:18px}
.sec-sub{color:var(--txt-2);margin-top:16px;max-width:64ch;font-size:clamp(14px,1.6vw,16px)}
.section{padding:clamp(64px,9vw,130px) 0;position:relative}
.section--tight{padding:clamp(52px,7vw,90px) 0}
.section--alt{background:var(--bg-2)}
.sec-head{max-width:820px}
.sec-head--center{margin:0 auto;text-align:center}
.sec-head--center .eyebrow{justify-content:center}
.sec-head--center .sec-sub{margin-left:auto;margin-right:auto}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:50px;padding:0 30px;border:1px solid var(--gold);
  background:var(--gold);color:#141005;border-radius:2px;
  font-size:15px;font-weight:500;letter-spacing:.02em;cursor:pointer;
  transition:background .3s var(--ease),border-color .3s var(--ease),color .3s var(--ease),transform .3s var(--ease);
}
.btn:hover{background:var(--gold-2);border-color:var(--gold-2);transform:translateY(-2px)}
.btn--ghost{background:transparent;color:var(--txt);border-color:var(--line-2)}
.btn--ghost:hover{background:rgba(255,255,255,.07);border-color:var(--txt);color:var(--txt)}
.btn--sm{height:42px;padding:0 22px;font-size:14px}
.btn--block{width:100%}
.btn svg{width:16px;height:16px;flex:none}

/* ---------- 顶部导航 ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:900;height:var(--nav-h);
  display:flex;align-items:center;
  transition:background .45s var(--ease),border-color .45s var(--ease),height .45s var(--ease);
  border-bottom:1px solid transparent;
}
.nav.is-solid{
  background:rgba(8,9,11,.86);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom-color:var(--line);height:66px;
}
.nav__inner{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:11px;flex:none}
.brand__mark{width:34px;height:34px;flex:none}
.brand__txt{display:flex;flex-direction:column;line-height:1.1}
.brand__cn{font-size:17px;font-weight:600;letter-spacing:.06em}
.brand__en{font-size:9px;letter-spacing:.28em;color:var(--txt-3);text-transform:uppercase}
.nav__menu{display:flex;align-items:center;gap:2px}
.nav__menu a{
  position:relative;padding:10px 14px;font-size:14.5px;color:var(--txt-2);
  transition:color .3s var(--ease);white-space:nowrap;
}
.nav__menu a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:1px;
  background:var(--gold);transform:scaleX(0);transform-origin:left;transition:transform .35s var(--ease);
}
.nav__menu a:hover,.nav__menu a.is-active{color:var(--txt)}
.nav__menu a:hover::after,.nav__menu a.is-active::after{transform:scaleX(1)}
.nav__right{display:flex;align-items:center;gap:16px;flex:none}
.nav__tel{font-size:14px;color:var(--txt-2);display:flex;align-items:center;gap:8px}
.nav__tel svg{width:15px;height:15px;color:var(--gold)}
.nav__burger{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  background:none;border:1px solid var(--line);border-radius:2px;cursor:pointer;
}
.nav__burger span{display:block;width:16px;height:1.5px;background:var(--txt);position:relative;transition:.3s var(--ease)}
.nav__burger span::before,.nav__burger span::after{
  content:"";position:absolute;left:0;width:16px;height:1.5px;background:var(--txt);transition:.3s var(--ease);
}
.nav__burger span::before{top:-5px}
.nav__burger span::after{top:5px}
body.nav-open .nav__burger span{background:transparent}
body.nav-open .nav__burger span::before{transform:translateY(5px) rotate(45deg)}
body.nav-open .nav__burger span::after{transform:translateY(-5px) rotate(-45deg)}

/* 移动端抽屉 */
.drawer{
  position:fixed;inset:0;z-index:880;background:var(--bg);
  padding:calc(var(--nav-h) + 24px) 24px 40px;
  transform:translateY(-100%);transition:transform .5s var(--ease);
  overflow-y:auto;
}
body.nav-open .drawer{transform:translateY(0)}
.drawer a{display:block;padding:16px 0;font-size:19px;border-bottom:1px solid var(--line);color:var(--txt-2)}
.drawer a:active,.drawer a.is-active{color:var(--gold)}
.drawer__cta{margin-top:28px;display:flex;flex-direction:column;gap:12px}

/* ---------- Hero 视频轮播 ---------- */
/* ---------- 首页：公司介绍片首屏 ---------- */
.vhero{position:relative;height:100svh;min-height:600px;max-height:1000px;display:flex;align-items:flex-end;overflow:hidden;background:#06070a}
.vhero__video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.vhero__scrim{position:absolute;inset:0;background:linear-gradient(100deg,rgba(4,5,7,.94) 0%,rgba(4,5,7,.8) 34%,rgba(4,5,7,.32) 64%,rgba(4,5,7,.62) 100%),linear-gradient(to top,rgba(4,5,7,.97) 0%,rgba(4,5,7,0) 55%)}
.vhero__in{position:relative;z-index:2;width:100%;padding-bottom:clamp(118px,17vh,178px)}
.vhero__kicker{font-size:clamp(11px,1.2vw,12.5px);letter-spacing:.24em;color:var(--gold-2);margin-bottom:22px}
.vhero h1{font-size:clamp(32px,6.2vw,70px);line-height:1.12;font-weight:600;letter-spacing:-.015em;max-width:16ch}
.vhero__sub{margin-top:24px;color:#b3bac2;font-size:clamp(14px,1.7vw,16.5px);line-height:1.9;max-width:50ch}
.vhero__actions{margin-top:34px;display:flex;flex-wrap:wrap;gap:12px}
.vhero__bar{position:absolute;left:0;right:0;bottom:clamp(24px,4vh,40px);z-index:3}
.vhero__bar .wrap{display:flex;align-items:center;gap:18px}
.vhero__sound{display:inline-flex;align-items:center;gap:8px;border:0;background:none;padding:6px 0;color:rgba(255,255,255,.6);font-size:11.5px;letter-spacing:.12em;cursor:pointer}
.vhero__sound svg{width:18px;height:18px}
.vhero__sound:hover,.vhero__sound.is-on{color:var(--gold-2)}
.vhero__track{flex:1;height:2px;background:rgba(255,255,255,.16);position:relative;overflow:hidden}
.vhero__track i{position:absolute;left:0;top:0;bottom:0;width:0;background:var(--gold-2);display:block}
.vhero__tag{font-size:10.5px;letter-spacing:.28em;color:rgba(255,255,255,.34);white-space:nowrap}
.vhero__play{position:absolute;inset:0;z-index:4;display:flex;align-items:center;justify-content:center;background:rgba(4,5,7,.42);border:0;cursor:pointer}
.vhero__play span{display:inline-flex;align-items:center;padding:16px 28px;border:1px solid var(--gold);border-radius:100px;color:var(--gold-2);font-size:14px;letter-spacing:.08em;background:rgba(4,5,7,.5)}
@media(max-width:860px){
  .vhero{min-height:520px}
  .vhero__in{padding-bottom:clamp(108px,15vh,150px)}
  .vhero h1{font-size:clamp(28px,8.6vw,42px)}
  .vhero__tag{display:none}
}
.hero{position:relative;height:100svh;min-height:560px;max-height:1000px;overflow:hidden;background:#000}
.hero--compact{height:clamp(400px,60vh,580px);min-height:0;max-height:none}
.hero__stage{position:absolute;inset:0}
.hero__slide{position:absolute;inset:0;opacity:0;transition:opacity 1.4s var(--ease);visibility:hidden}
.hero__slide.is-active{opacity:1;visibility:visible}
.hero__slide video,.hero__slide img{width:100%;height:100%;object-fit:cover;transform:scale(1.04);transition:transform 8s linear}
.hero__slide.is-active video,.hero__slide.is-active img{transform:scale(1)}
.hero__mask{
  position:absolute;inset:0;
  background:
    linear-gradient(to top,rgba(8,9,11,.96) 0%,rgba(8,9,11,.55) 34%,rgba(8,9,11,.35) 60%,rgba(8,9,11,.72) 100%),
    linear-gradient(to right,rgba(8,9,11,.85) 0%,rgba(8,9,11,.15) 58%,rgba(8,9,11,.5) 100%);
}
.hero__vig{position:absolute;inset:0;background:radial-gradient(ellipse at 50% 45%,transparent 32%,rgba(0,0,0,.6) 100%)}
.hero__body{position:absolute;inset:0}
.hero__slide--text{
  display:flex;align-items:flex-end;
  padding-bottom:clamp(72px,11vh,140px);
}
.hero__slide--text > .wrap{width:100%}
.hero__text{max-width:820px}
.hero__kicker{
  display:inline-flex;align-items:center;gap:12px;font-size:12px;letter-spacing:.24em;
  text-transform:uppercase;color:var(--gold);margin-bottom:22px;
}
.hero__kicker i{display:block;width:34px;height:1px;background:var(--gold)}
.hero__h1{font-size:clamp(30px,6.4vw,66px);line-height:1.12;font-weight:600;letter-spacing:-.02em}
.hero__h1 em{font-style:normal;color:var(--gold-2)}
.hero__p{margin-top:22px;font-size:clamp(14px,1.9vw,18px);color:#c6cbd2;max-width:56ch;line-height:1.85}
.hero__actions{margin-top:36px;display:flex;flex-wrap:wrap;gap:14px}

/* 轮播控制 */
.hero__ctrl{
  position:absolute;right:max(24px,calc((100% - var(--max))/2 + 24px));bottom:clamp(72px,11vh,140px);
  display:flex;flex-direction:column;gap:14px;z-index:5;
}
.hero__dot{
  display:flex;align-items:center;gap:12px;background:none;border:0;cursor:pointer;
  color:var(--txt-3);font-size:11px;letter-spacing:.16em;padding:0;
  transition:color .3s var(--ease);
}
.hero__dot .bar{position:relative;display:block;width:44px;height:2px;background:rgba(255,255,255,.22);overflow:hidden}
.hero__dot .bar i{position:absolute;inset:0;background:var(--gold);transform:scaleX(0);transform-origin:left}
.hero__dot.is-active{color:var(--txt)}
.hero__dot.is-active .bar i{animation:heroBar var(--dur,7s) linear forwards}
@keyframes heroBar{from{transform:scaleX(0)}to{transform:scaleX(1)}}
.hero__scroll{
  position:absolute;left:max(24px,calc((100% - var(--max))/2 + 24px));bottom:26px;
  display:flex;align-items:center;gap:10px;font-size:11px;letter-spacing:.2em;color:var(--txt-3);z-index:5;
}
.hero__scroll i{display:block;width:1px;height:34px;background:linear-gradient(var(--gold),transparent);animation:scrollHint 2s infinite}
@keyframes scrollHint{0%,100%{opacity:.3;transform:scaleY(.6)}50%{opacity:1;transform:scaleY(1)}}

/* ---------- 跑马灯 ---------- */
.ticker{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg-2);overflow:hidden;padding:20px 0}
.ticker__track{display:flex;gap:0;width:max-content;animation:tick 42s linear infinite}
.ticker__track span{
  padding:0 40px;font-size:14px;color:var(--txt-3);letter-spacing:.1em;white-space:nowrap;
  display:flex;align-items:center;gap:40px;
}
.ticker__track span::after{content:"";width:4px;height:4px;background:var(--gold);border-radius:50%;opacity:.5}
@keyframes tick{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ---------- 服务卡片 ---------- */
.svc-grid{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);margin-top:clamp(38px,5vw,64px)}
.svc{
  position:relative;background:var(--bg);padding:clamp(28px,3.4vw,46px);
  display:flex;flex-direction:column;gap:16px;overflow:hidden;
  transition:background .45s var(--ease);
}
.svc:hover{background:var(--bg-3)}
.svc__no{font-size:12px;letter-spacing:.2em;color:var(--gold);opacity:.85}
.svc__t{font-size:clamp(19px,2.2vw,24px);font-weight:600}
.svc__d{color:var(--txt-2);font-size:14.5px;flex:1}
.svc__tags,.pill-set{display:flex;flex-wrap:wrap;gap:8px}
.pill,.svc__tags span{font-size:12px;color:var(--txt-3);border:1px solid var(--line);padding:4px 12px;border-radius:100px;display:inline-block}
.svc__go{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;color:var(--gold);margin-top:6px}
.svc__go svg{width:15px;height:15px;transition:transform .35s var(--ease)}
.svc:hover .svc__go svg{transform:translateX(5px)}
.svc__bgimg{
  position:absolute;inset:0;opacity:0;background-size:cover;background-position:center;
  transition:opacity .6s var(--ease),transform .8s var(--ease);transform:scale(1.06);
}
.svc:hover .svc__bgimg{opacity:.16;transform:scale(1)}
.svc > *{position:relative;z-index:2}

/* ---------- 案例网格 ---------- */
.case-grid{display:grid;gap:20px;margin-top:clamp(34px,4.5vw,58px)}
.case{
  position:relative;display:block;overflow:hidden;background:var(--bg-3);
  border:1px solid var(--line);aspect-ratio:4/3;
  transition:border-color .4s var(--ease),transform .5s var(--ease);
}
.case:hover{border-color:var(--line-2);transform:translateY(-4px)}
.case__img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.62;transition:opacity .6s var(--ease),transform .9s var(--ease)}
.case:hover .case__img{opacity:.85;transform:scale(1.05)}
.case__mask{position:absolute;inset:0;background:linear-gradient(to top,rgba(5,6,8,.96) 0%,rgba(5,6,8,.35) 52%,rgba(5,6,8,.1) 100%)}
.case__body{position:absolute;left:0;right:0;bottom:0;padding:26px;z-index:2}
.case__cat{font-size:11px;letter-spacing:.18em;color:var(--gold);text-transform:uppercase}
.case__t{font-size:clamp(17px,2vw,21px);margin-top:10px;font-weight:600}
.case__c{font-size:13px;color:var(--txt-2);margin-top:8px}
.case__play{
  position:absolute;top:22px;right:22px;width:46px;height:46px;border-radius:50%;
  border:1px solid var(--line-2);display:flex;align-items:center;justify-content:center;
  background:rgba(0,0,0,.35);backdrop-filter:blur(6px);opacity:0;transform:scale(.85);
  transition:opacity .4s var(--ease),transform .4s var(--ease);z-index:2;
}
.case:hover .case__play{opacity:1;transform:scale(1)}
.case__play svg{width:15px;height:15px;color:var(--gold-2);margin-left:2px}
.case--wide{grid-column:span 2;aspect-ratio:16/9}

/* 分类筛选 */
.filters{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px}
.filters button{
  background:transparent;border:1px solid var(--line);color:var(--txt-2);
  padding:9px 20px;border-radius:100px;font-size:14px;cursor:pointer;
  transition:.32s var(--ease);
}
.filters button:hover{color:var(--txt);border-color:var(--line-2)}
.filters button.is-on{background:var(--gold);border-color:var(--gold);color:#141005;font-weight:500}

/* ---------- 数据 ---------- */
.stats{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);margin-top:clamp(38px,5vw,64px)}
.stat{background:var(--bg);padding:clamp(26px,3vw,40px) clamp(20px,2.4vw,32px)}
.stat__n{font-size:clamp(32px,5vw,54px);font-weight:600;color:var(--gold-2);letter-spacing:-.02em;line-height:1}
.stat__n sup{font-size:.42em;margin-left:2px;top:-.7em;position:relative}
.stat__l{margin-top:14px;color:var(--txt-2);font-size:14px}
.stat__l b{color:var(--txt);font-weight:500}

/* ---------- 流程 ---------- */
.flow{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);margin-top:clamp(38px,5vw,64px)}
.flow__i{background:var(--bg);padding:clamp(26px,3vw,38px);position:relative}
.flow__no{
  font-size:12px;letter-spacing:.18em;color:var(--gold);opacity:.8;
  display:flex;align-items:center;gap:12px;
}
.flow__no::after{content:"";flex:1;height:1px;background:var(--line)}
.flow__t{margin-top:20px;font-size:18px;font-weight:600}
.flow__d{margin-top:12px;color:var(--txt-2);font-size:14px}

/* ---------- 动态列表 ---------- */
.news-list{margin-top:clamp(32px,4vw,54px);border-top:1px solid var(--line)}
.news-item{
  display:block;padding:28px 0;border-bottom:1px solid var(--line);
  transition:padding-left .4s var(--ease);
}
.news-item:hover{padding-left:12px}
.news-item__meta{display:flex;align-items:center;gap:14px;font-size:12.5px;color:var(--txt-3);letter-spacing:.06em}
.news-item__meta i{display:block;width:22px;height:1px;background:var(--gold);opacity:.6}
.news-item__t{margin-top:14px;font-size:clamp(17px,2.2vw,22px);font-weight:600;transition:color .3s var(--ease)}
.news-item:hover .news-item__t{color:var(--gold-2)}
.news-item__d{margin-top:12px;color:var(--txt-2);font-size:14.5px;max-width:80ch}
.news-item__row{display:flex;gap:26px;align-items:flex-start}
.news-item__thumb{width:190px;flex:none;aspect-ratio:16/10;object-fit:cover;border:1px solid var(--line);opacity:.85}

/* ---------- CTA ---------- */
.cta{position:relative;overflow:hidden;background:var(--bg-3);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.cta__bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.26;filter:saturate(.92)}
.cta__mask{position:absolute;inset:0;background:radial-gradient(ellipse at 30% 50%,rgba(200,165,107,.14),transparent 60%),linear-gradient(rgba(11,12,14,.7),rgba(11,12,14,.9))}
.cta__in{position:relative;z-index:2;padding:clamp(64px,9vw,120px) 0;text-align:center}
.cta__in h2{font-size:clamp(26px,4.4vw,46px)}
.cta__in p{color:var(--txt-2);margin-top:18px;max-width:60ch;margin-left:auto;margin-right:auto}
.cta__actions{margin-top:36px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.footer{background:#050608;border-top:1px solid var(--line);padding:clamp(52px,6vw,80px) 0 32px}
.footer__grid{display:grid;gap:44px}
.footer h4{font-size:14px;letter-spacing:.14em;color:var(--txt);margin-bottom:20px;text-transform:uppercase}
.footer__links a{display:block;padding:7px 0;font-size:14px;color:var(--txt-2);transition:color .3s var(--ease)}
.footer__links a:hover{color:var(--gold-2)}
.footer__contact li{display:flex;gap:12px;padding:8px 0;font-size:14px;color:var(--txt-2)}
.footer__contact svg{width:16px;height:16px;color:var(--gold);flex:none;margin-top:5px}
.footer__brand p{color:var(--txt-3);font-size:13.5px;margin-top:18px;max-width:42ch}
.footer__bottom{
  margin-top:52px;padding-top:26px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;
  font-size:12.5px;color:var(--txt-3);
}
.footer__bottom a:hover{color:var(--txt-2)}

/* ---------- 内页头 ---------- */
.phead{position:relative;padding:calc(var(--nav-h) + clamp(60px,9vw,120px)) 0 clamp(48px,6vw,86px);overflow:hidden;background:#000}
.phead__media{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.42}
.phead__mask{position:absolute;inset:0;background:linear-gradient(to top,rgba(8,9,11,1) 2%,rgba(8,9,11,.6) 55%,rgba(8,9,11,.75) 100%)}
.phead__in{position:relative;z-index:2}
.phead__in h1{font-size:clamp(28px,5vw,52px);margin-top:20px;max-width:20ch}
.phead__in p{color:#c3c8cf;margin-top:20px;max-width:62ch;font-size:clamp(14px,1.7vw,16.5px)}

/* ---------- 栏目页：广告图轮播头 ---------- */
.phead--ads{padding:0;min-height:clamp(560px,78vh,800px);display:flex;align-items:flex-end;background:#06070a}
.ads{position:absolute;inset:0}
.ad{position:absolute;inset:0;display:flex;align-items:flex-end;opacity:0;visibility:hidden;transition:opacity 1.1s var(--ease),visibility 0s linear 1.1s}
.ad.is-on{opacity:1;visibility:visible;transition:opacity 1.1s var(--ease),visibility 0s}
.ad__bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transform:scale(1.07);transition:transform 9s linear}
.ad.is-on .ad__bg{transform:scale(1)}
.ad__scrim{position:absolute;inset:0;background:linear-gradient(100deg,rgba(4,5,7,.96) 0%,rgba(4,5,7,.87) 30%,rgba(4,5,7,.44) 60%,rgba(4,5,7,.7) 100%),linear-gradient(to top,rgba(4,5,7,.97) 0%,rgba(4,5,7,0) 55%)}
.ad__in{position:relative;z-index:2;width:100%;display:flex;flex-direction:column;align-items:flex-start;padding-top:calc(var(--nav-h) + 56px);padding-bottom:clamp(96px,15vh,150px)}
.ad__body{max-width:min(660px,58%)}
.ad__meta{display:flex;align-items:center;gap:clamp(12px,1.6vw,18px)}
.ad__no{font-size:clamp(26px,4vw,44px);font-weight:600;line-height:1;color:transparent;-webkit-text-stroke:1px rgba(200,165,107,.55);letter-spacing:.02em}
.ad__rule{flex:none;width:clamp(26px,4.6vw,54px);height:1px;background:linear-gradient(90deg,var(--gold),rgba(200,165,107,0))}
.ad__kicker{font-size:clamp(11px,1.2vw,12.5px);letter-spacing:.22em;color:var(--gold-2);white-space:nowrap}
.ad__title{margin:clamp(18px,2.4vw,30px) 0 0;font-size:clamp(29px,4.7vw,56px);font-weight:600;line-height:1.16;letter-spacing:-.012em;color:#fff;max-width:19ch}
.ad__title em{font-style:normal;color:var(--gold-2)}
.ad__sub{margin:clamp(16px,2vw,26px) 0 0;color:#a9b0b9;font-size:clamp(13.5px,1.6vw,15.5px);line-height:1.92;max-width:42ch}
.ad__mark{position:absolute;z-index:2;right:max(24px,calc((100% - var(--max)) / 2 + 24px));top:calc(var(--nav-h) + 22px);writing-mode:vertical-rl;font-size:10.5px;letter-spacing:.36em;color:rgba(255,255,255,.2)}
.ad__res{position:absolute;z-index:2;right:24px;bottom:clamp(68px,10.5vh,108px);max-width:min(320px,42%);padding-left:20px;border-left:1px solid rgba(200,165,107,.45);text-align:right}
.ad__res b{display:block;font-size:10.5px;font-weight:400;letter-spacing:.26em;color:var(--gold-2)}
.ad__res span{display:block;margin-top:9px;font-size:clamp(15px,1.9vw,20px);font-weight:600;line-height:1.5;color:#fff;letter-spacing:.01em}
.ads__crumb{position:absolute;left:0;right:0;top:calc(var(--nav-h) + 26px);z-index:5;display:flex;gap:8px;font-size:12.5px;color:rgba(255,255,255,.42)}
.ads__crumb a{color:rgba(255,255,255,.62)}
.ads__crumb a:hover{color:var(--gold-2)}
.ads__ctrl{position:absolute;left:0;right:0;bottom:clamp(26px,4vh,44px);z-index:5;display:flex;align-items:center;justify-content:space-between;gap:18px}
.ads__dots{display:flex;gap:clamp(8px,1.2vw,14px)}
.ads__dot{position:relative;width:clamp(32px,4.6vw,52px);height:2px;padding:0;border:0;background:rgba(255,255,255,.18);cursor:pointer;overflow:hidden}
.ads__dot i{position:absolute;left:0;top:0;bottom:0;width:0;background:var(--gold-2)}
.ads__dot.is-on i{width:100%;transition:width var(--ad-dur,5600ms) linear}
.ads__count{font-size:12px;letter-spacing:.14em;color:rgba(255,255,255,.36)}
.ads__count b{color:var(--gold-2);font-weight:600}
.ads__count span{margin-left:4px}
@media(max-width:1023px){
  .ad__res{position:static;width:100%;max-width:none;text-align:left;padding-left:16px;margin-top:26px}
}
@media(max-width:860px){
  .phead--ads{min-height:clamp(540px,76vh,700px)}
  .ad__body{max-width:100%}
  .ad__title{max-width:15ch}
  .ad__mark{display:none}
  .ad__in{padding-bottom:clamp(84px,13vh,116px)}
}

/* ---------- 卖点区（栏目页） ---------- */
.selling__head{max-width:900px}
.selling__note{margin-top:30px;padding:18px 22px;border-left:2px solid var(--gold);background:linear-gradient(90deg,rgba(200,165,107,.09),transparent);color:var(--txt);font-size:clamp(15px,1.8vw,17px);line-height:1.95;border-radius:0 6px 6px 0}
.selling__grid{margin-top:46px;display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.selling__card{position:relative;padding:30px 26px 28px;border:1px solid var(--line);background:var(--bg-2);border-radius:3px;transition:border-color .3s,transform .3s}
.selling__card:hover{border-color:var(--gold);transform:translateY(-4px)}
.selling__num{font-size:13px;color:var(--gold);letter-spacing:.12em;margin-bottom:14px}
.selling__card h3{font-size:19px;font-weight:600;margin-bottom:12px;color:var(--txt)}
.selling__card p{color:var(--txt-2);font-size:14px;line-height:1.85}
.selling__closer{margin-top:40px;text-align:center;font-size:clamp(17px,2.2vw,22px);font-weight:600;color:var(--gold-2)}
@media(max-width:860px){.selling__grid{grid-template-columns:1fr}}
.crumb{font-size:12.5px;color:var(--txt-3);letter-spacing:.06em}
.crumb a:hover{color:var(--gold-2)}

/* ---------- 内容排版 ---------- */
.prose p{margin:0 0 20px;color:var(--txt-2)}
.prose h3{margin:38px 0 16px;font-size:20px;color:var(--txt)}
.prose ul{margin:0 0 22px}
.prose li{position:relative;padding-left:22px;margin-bottom:12px;color:var(--txt-2)}
.prose li::before{content:"";position:absolute;left:0;top:11px;width:7px;height:1px;background:var(--gold)}

.split{display:grid;gap:clamp(32px,5vw,72px);align-items:center}
.split__media{position:relative;overflow:hidden;border:1px solid var(--line)}
.split__media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.split__media--wide img{aspect-ratio:16/9}

/* 能力清单 */
.cap-list{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);margin-top:34px}
.cap{background:var(--bg);padding:26px 28px;display:flex;gap:20px;align-items:flex-start}
.cap__i{
  width:38px;height:38px;flex:none;border:1px solid var(--line-2);border-radius:50%;
  display:flex;align-items:center;justify-content:center;color:var(--gold-2);font-size:12px;letter-spacing:.04em;
}
.cap__t{font-size:16.5px;font-weight:600}
.cap__d{margin-top:8px;color:var(--txt-2);font-size:14px}

/* 案例详情 */
.cd-hero{position:relative;background:#000;aspect-ratio:16/9;max-height:74vh;width:100%;overflow:hidden;border:1px solid var(--line)}
.cd-hero video,.cd-hero img{width:100%;height:100%;object-fit:cover}
.cd-meta{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);margin-top:34px}
.cd-meta div{background:var(--bg);padding:22px 24px}
.cd-meta dt{font-size:12px;letter-spacing:.16em;color:var(--txt-3);text-transform:uppercase}
.cd-meta dd{margin:10px 0 0;font-size:15.5px}

/* 视频播放占位（无视频源时） */
.vph{
  position:relative;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#101216,#191d23);color:var(--txt-3);
  text-align:center;padding:30px;font-size:13.5px;letter-spacing:.06em;
}
.vph::before{
  content:"";position:absolute;inset:14px;border:1px dashed rgba(255,255,255,.12);
}
.vph span{position:relative;z-index:2;max-width:40ch;line-height:1.9}

/* ---------- 表单 ---------- */
.form{display:grid;gap:18px}
.field{display:flex;flex-direction:column;gap:9px}
.field label{font-size:13px;color:var(--txt-2);letter-spacing:.04em}
.field input,.field textarea,.field select{
  background:var(--bg-3);border:1px solid var(--line);border-radius:2px;
  padding:14px 16px;font-size:15px;outline:none;transition:border-color .3s var(--ease),background .3s var(--ease);
  width:100%;
}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--gold);background:var(--bg-4)}
.field textarea{min-height:130px;resize:vertical;line-height:1.7}
.form__row{display:grid;gap:18px}
.note{font-size:12.5px;color:var(--txt-3)}
.msg{padding:14px 16px;border-radius:2px;font-size:14px;border:1px solid var(--line)}
.msg--ok{border-color:rgba(120,200,140,.4);background:rgba(120,200,140,.08);color:#a8e0b8}
.msg--err{border-color:rgba(220,120,120,.4);background:rgba(220,120,120,.08);color:#f0b4b4}

/* ---------- 响应式 ---------- */
@media(min-width:640px){
  .svc-grid{grid-template-columns:repeat(2,1fr)}
  .case-grid{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .flow{grid-template-columns:repeat(2,1fr)}
  .cap-list{grid-template-columns:repeat(2,1fr)}
  .cd-meta{grid-template-columns:repeat(2,1fr)}
  .form__row{grid-template-columns:1fr 1fr}
  .footer__grid{grid-template-columns:repeat(2,1fr)}
}
@media(min-width:900px){
  .split{grid-template-columns:1.05fr .95fr}
  .split--rev .split__text{order:2}
  .news-item__row{gap:32px}
}
@media(min-width:1024px){
  .svc-grid{grid-template-columns:repeat(3,1fr)}
  .case-grid{grid-template-columns:repeat(3,1fr)}
  .stats{grid-template-columns:repeat(4,1fr)}
  .flow{grid-template-columns:repeat(4,1fr)}
  .footer__grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr}
}
@media(max-width:1023px){
  .nav__menu,.nav__tel{display:none}
  .nav__burger{display:flex}
  .hero__ctrl{right:24px;bottom:96px}
  .hero__scroll{display:none}
  .news-item__thumb{width:120px}
}
@media(max-width:700px){
  .nav__cta{display:none}
}
@media(min-width:1024px) and (max-width:1200px){
  .nav__menu a{padding:10px 9px;font-size:13.5px}
  .nav__menu a::after{left:9px;right:9px}
}
@media(max-width:560px){
  .wrap{padding:0 18px}
  .nav__inner{padding:0 18px}
  .hero__actions .btn{flex:1 1 auto}
  .case--wide{grid-column:span 1;aspect-ratio:4/3}
  .news-item__row{flex-direction:column-reverse;gap:16px}
  .news-item__thumb{width:100%}
}

/* 滚动进入动画 */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .hero__slide video{transform:none!important}
  .ticker__track{animation:none}
}